Octopamine levels during the moult cycle and adult development in the migratory locust,Locusta migratoria |
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| Authors: | Suzel Fuzeau-Braesch J F Coulon J C David |
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| Institution: | (1) Laboratoire de Biologie de l'Insecte, Université de Paris-Sud, Bat 440-443, F-91405 Orsay, France;(2) U.E.R. de Biochimie, Université d'Angers, bd Lavoisier, F-49 Angers, France;(3) Laboratoire de Biochimie du Développement, I.R.B.M., Université Paris 7, 2, place Jussieu, Paris 5, France |
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| Abstract: | Summary Octopamine content of the head of the locustLocusta migratoria has been determined during the last larval stage, moulting and adult life of 3 groups of insects: female and male gregarious, solitary and CO2 solitarized. An important difference was found between these 3 groups. Octopamine contents increased in the middle of the larval life and during the adult life. The moulting time is characterized by a sharp decrease of the octopamine content which becomes identical in the 3 groups of insects. The relation between octopamine content, hormone cycles and motility is discussed. |
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